Check for repositories

[motorhead_1]

checking for repositories and sudo apt-get update take ages now to complete and at the end I've the following messsage:

Reading package lists... Done
W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY C28F899060FD0E97
W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 015A66E603E02400


what should I do? I think it's this thing that is slowing the process

[mkvnmtr]

It looks like when you enabled those repositories you failed to download the key. Go back to the tutitorial where you found them and folllow the instrunctions to download the key.
I do find some of the launchpad repositories download very slowly. Not really anything to do about it.

[motorhead_1]

Ok I've read that I've to add the keys for those repositories, which are...?

[mkvnmtr]

Only you know where you found those repositories. You will have to go to where you found them and follow the instrunctions to download the key.

[motorhead_1]

thanks I've posted the question also in the thread where I found these repos
http://ubuntuforums.org/showthread.php?t=1081070

[oldos2er]

Try
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys KEYID where KEYID is the number given after NO_PUBKEY.

[motorhead_1]

it works, thanks!!!